EP2381243A1 - Analysator - Google Patents

Analysator Download PDF

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Publication number
EP2381243A1
EP2381243A1 EP09834720A EP09834720A EP2381243A1 EP 2381243 A1 EP2381243 A1 EP 2381243A1 EP 09834720 A EP09834720 A EP 09834720A EP 09834720 A EP09834720 A EP 09834720A EP 2381243 A1 EP2381243 A1 EP 2381243A1
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EP
European Patent Office
Prior art keywords
detector
nucleic acid
detectors
reaction
carousel
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Granted
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EP09834720A
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English (en)
French (fr)
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EP2381243A4 (de
EP2381243B1 (de
Inventor
Minoru Sano
Masato Ishizawa
Shuhei Yamamoto
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Hitachi High Tech Corp
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Hitachi High Technologies Corp
Hitachi High Tech Corp
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Publication of EP2381243A4 publication Critical patent/EP2381243A4/de
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/645—Specially adapted constructive features of fluorimeters
    • G01N21/6452—Individual samples arranged in a regular 2D-array, e.g. multiwell plates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/645—Specially adapted constructive features of fluorimeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
    • G01N35/025—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations having a carousel or turntable for reaction cells or cuvettes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L7/00—Heating or cooling apparatus; Heat insulating devices
    • B01L7/52—Heating or cooling apparatus; Heat insulating devices with provision for submitting samples to a predetermined sequence of different temperatures, e.g. for treating nucleic acid samples
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N2035/00346—Heating or cooling arrangements
    • G01N2035/00356—Holding samples at elevated temperature (incubation)
    • G01N2035/00366—Several different temperatures used
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/0332—Cuvette constructions with temperature control

Definitions

  • the present invention relates to an analyzer for analyzing a biologically-related substance, and for example, relates to an analyzer for analyzing nucleic acid.
  • the PCR method As a nucleic acid amplification method, for example, the PCR method is known.
  • nucleic acid contained in a specimen is amplified in a base sequence-specific manner to detect a trace of nucleic acid with high sensitivity.
  • a fluorophore is used for nucleic acid labeling, and changes in fluorescence intensity are chronologically tracked to perform an analysis.
  • temperatures of a reaction liquid are controlled to facilitate a reaction.
  • Patent Document 1 JP Patent Publication (Kokai) No. 2002-116148 A discloses a fluorescence-type plate analyzing device in which reaction containers, each of which is referred to as a "well", are arranged in lattice form on a quadrate plate.
  • irradiation and detection optical systems are provided on a bottom side of the plate. The plate is moved along a horizontal plane in longitudinal and lateral directions, to detect fluorescence from a sample held in the well. Additionally, in this device, the fluorescence is detected not only at a single detection position but also at a plurality of detection positions to perform fluorescence measurement efficiently.
  • LEDs Light-Emitting Diodes
  • LEDs Light-Emitting Diodes
  • the inventors of the present application have conducted concentrated studies on a nucleic acid analyzer suitable for a clinical test, and found knowledge as described below.
  • test results there is a need to obtain test results with respect to a plurality of test items from a specimen.
  • the test items or the measuring objects are frequently changed, increased, or decreased, and therefore it is required to be able to respond to an emergent measurement or test.
  • An object of the present invention is to provide a nucleic acid analyzer capable of testing a plurality of test items in parallel, and of obtaining high efficiency of specimen processing even if a test item or a measuring object is changed.
  • the present invention relates to an analyzer comprising a carousel rotatable about a rotation axis, a plurality of reaction containers held along a circumferential edge of the carousel, and at least one detector including a light source for irradiating the reaction container with excitation light and a detection element for detecting fluorescence from a reaction liquid in the reaction container.
  • the detector is removable. By attaching a desired detector, it is possible to perform fluorescence measurement in response to a test item.
  • the present invention it is possible to test a plurality of test items in parallel, and even if the test item or a measuring object is changed, high efficiency of specimen processing can be obtained.
  • An embodiment discloses a nucleic acid analyzer comprising a carousel rotatable about a rotation axis, a plurality of reaction containers held along a circumferential edge of the carousel, and at least one detector including a light source for irradiating the reaction container with excitation light and a detection element for detecting fluorescence from a reaction liquid in the reaction container, wherein the detector is removably attached, and the detectors are configured to perform fluorescence measurement independently of one another.
  • an embodiment discloses a nucleic acid analyzer wherein each of a plurality of detectors is configured to comprise a light source for generating excitation light having a wavelength different from one another and a detection element for detecting fluorescence having a wavelength different from one another.
  • an embodiment discloses a nucleic acid analyzer wherein each of a plurality of detectors is selected such that the difference between wavelengths of excitation lights generated by light sources of the adjacent two detectors is larger than a predetermined wavelength difference, and the difference between wavelengths of fluorescences detected by detection elements of the adjacent two detectors is larger than a predetermined wavelength difference.
  • an embodiment discloses a nucleic acid analyzer wherein each of a plurality of detectors is configured to comprise a light source for generating excitation light having the identical wavelength and a detection element for detecting fluorescence having the identical wavelength.
  • an embodiment discloses a nucleic acid analyzer wherein amplification gains with respect to output signals from a plurality of detectors are set to be different from one another.
  • an embodiment discloses a nucleic acid analyzer wherein resolutions of output signals from a plurality of detectors are set to be different from one another.
  • an embodiment discloses a nucleic acid analyzer wherein a douser is provided between adjacent two detectors of a plurality of detectors.
  • an embodiment discloses a nucleic acid analyzer configured such that a detector is provided with an openable and closable shutter; and when the detector optically detects a reaction solution in a reaction container, the shutter opens; and when the detector does not optically detect the reaction solution in the reaction container, the shutter closes.
  • an embodiment discloses a nucleic acid analyzer wherein a light source of a detecting device comprises a light-emitting diode, and a detection element comprises a photodiode.
  • an embodiment discloses a nucleic acid analyzer comprising a slot for removably supporting a detector; and configured such that the detector can be removed or attached by moving the detector along the slot.
  • an embodiment discloses a nucleic acid analyzer wherein there is provided a temperature controlling device for keeping temperatures of a reaction container and a reaction liquid in the reaction container at predetermined temperatures.
  • a temperature controlling device comprises a fan, a heat source, and a temperature sensor.
  • a temperature controlling device comprises a heat source and a temperature sensor which are provided in a carousel.
  • an embodiment discloses a nucleic acid analyzer wherein there is provided a casing for accommodating at least a carousel and a reaction container; the casing comprises an openable and closable gate; and the reaction container can be taken in and out via the gate.
  • an embodiment discloses a nucleic acid analyzer comprising a carousel rotatable about a rotation axis, a plurality of reaction containers held along a circumferential edge of the carousel, at least one detector including a light source for irradiating the reaction container with excitation light and a detection element for detecting fluorescence from a reaction liquid in the reaction container, and a temperature controlling device for keeping temperatures of a reaction container and a reaction liquid in the reaction container at predetermined temperatures, wherein the detector is removably attached, and the detectors are configured to perform fluorescence measurement independently of one another.
  • an embodiment discloses a nucleic acid analyzer configured such that a carousel is operated based on a cycle consisting of a container setting period for stopping the carousel in order to place or remove a reaction container and a fluorescence measurement period for rotating the carousel at a constant speed; and in the fluorescence measurement period, the detector measures fluorescence intensity when the reaction container is passing a detection position on a detector,.
  • an embodiment discloses a nucleic acid analyzing method for analyzing nucleic acid using a carousel rotatable about a rotation axis, wherein a plurality of reaction containers are placed along a circumferential edge of the carousel; a plurality of detectors placed along an outer circumference of the carousel measure fluorescence from a reaction solution contained in the reaction container while rotating the carousel, each of the plurality of detectors performing fluorescence measurement of a predetermined reaction solution independently of one another; and when the number or type of reaction containers is to be changed, the detector is added or removed.
  • an embodiment discloses a nucleic acid analyzing method wherein a plurality of detectors detect fluorescence having wavelengths different from one another.
  • a reading unit 1 of the present example includes a plurality of reaction containers 2 for accommodating reaction liquids which are targets for analysis, a carousel 3 for holding the reaction containers 2, a driving mechanism 4 for rotating the carousel, at least one detector 5 arranged along a circumference of the carousel 3, and a casing 8.
  • the carousel 3 includes a circular plate-shaped disk made of aluminum alloy, and is rotatable about a central axis. On an edge of the carousel 3, the numerous reaction containers 2 are held.
  • the detectors 5 are arranged along the circumference of the carousel 3 at regular intervals.
  • the detectors 5 are arranged beneath the reaction container 2.
  • the detectors 5 are provided outside of the casing 8.
  • the detectors 5 are provided inside of the casing 8.
  • five detectors 5 are provided.
  • any number of detectors 5 other than five may be provided.
  • the detector 5 is exchangeable, and is freely attached and removed.
  • the detector 5 is inserted into a slot 6.
  • the slot 6 may be configured so as to extend along a radial direction as the example shown in Figure 1A .
  • the slot 6 may be configured so as to extend along an axial direction as the example shown in Figure 1B .
  • the slot 6 may be arranged to be inclined with respect to the axial direction. That is, the slot 6 may be arranged along a conical surface.
  • the detector 5 may be mounted by moving the detector 5 inwardly along the slot 6 as shown by an arrow 6A.
  • the detector 5 may be removed by moving the detector 5 outwardly along the slot 6 in a direction opposite to the direction of the arrow 6A.
  • a snap-type fastening device may be provided in the slot 6, a snap-type fastening device may be provided. As shown by the arrow 6A, when the detector 5 is moved along the slot 6 inwardly, the detector 5 engages with the fastening device at a predetermined position, and cannot be moved any more. When the detector 5 is to be removed, the fastening device is released. The detector 5 may be fixed by a screw in place of the fastening device.
  • the detectors 5 can detect or measure the reaction liquids in the reaction containers 2 independently of one another. Accordingly, in the case where one of detectors goes out of order or maintenance of a detector is required, it is required to remove only the detector. In this case, the remaining detectors can be used without change. That is, no special tasks with respect to the remaining detectors are required. Removal of the detector does not affect detection sensitivity in the remaining detectors. Accordingly, it is possible to make test results coincident with each other before and after the tasks.
  • the casing 8 of the present example is provided with an openable and closable gate 9. It is to be noted that in Figure 2 , the casing 8 has been removed. At least, the reaction container 2 and the carousel 3 are accommodated in the casing 8. By the casing 8 being provided in this way, it is possible to keep a temperature in the casing 8 constant. Further, by the casing 8 being provided, it is possible to prevent irradiation of unnecessary light to the reaction container 2, and furthermore, to prevent incidence of unnecessary light into the detector 5. When the reaction container 2 is mounted to the carousel 3, the mounting is performed via the gate 9. Accordingly, when the reaction container 2 is mounted, it is not required to remove a whole of the casing 8.
  • the reading unit 1 of the present example further includes a temperature controlling device for keeping the temperature of the reaction liquid accommodated in the reaction container 2 at a predetermined temperature.
  • the temperature controlling device of the present example includes a fan 10, a heat source 11, and a temperature sensor 12.
  • the fan 10, the heat source 11, and the temperature sensor 12 are provided near a ceiling of the casing 8.
  • the carousel 3 may also be provided with the heat source 13 and the temperature sensor 14.
  • the analyzer of the present example is applicable to analyzers for various specimens. However, here, an explanation will be made citing the nucleic acid analyzer as an example. Additionally, as an example of the reading unit, a case where the fluorescence is detected will be described.
  • the detector 5 includes an excitation light source for irradiating the reaction container 2 held by the carousel 3 with excitation light.
  • the excitation light source the light-emitting diode (LED), a gas laser, a semiconductor laser, a xenon lamp, a halogen lamp, or the like may be used. However, as the excitation light source, the light-emitting diode is preferably used.
  • a sample solution containing fluorescence-labeled nucleic acid and the like is held in the reaction container.
  • the reaction container 2 is irradiated with the excitation light from the excitation light source, the reaction liquid generates the fluorescence.
  • the detector includes a detection element for detecting the fluorescence from the reaction liquid.
  • a photodiode, a photomultiplier, CCD, or the like is used.
  • the photodiode is preferably used.
  • Temperature control for facilitating nucleic acid amplification includes periodic control for changing temperatures cyclically and stepwisely as in the case of the PCR method, and constant-temperature control for keeping a predetermined temperature for a predetermined period of time as in the case of the NASBA method or the LAMP method. Further, in the case where the nucleic acid analyzer is under a comparatively high-temperature environment, an air conditioner is required.
  • the heat sources 11 and 13 preferred are not only warming elements like heaters but also temperature controlling elements with cooling functions such as Peltier elements.
  • nucleic acid is amplified using the analyzer of the present example by means of a nucleic acid amplification method.
  • nucleic acid amplification method by taking fluorescent substances into synthetic products quantitatively, it is possible to chronologically monitor the synthetic products.
  • NASBA method which is one of the nucleic acid amplification methods, is performed.
  • the NASBA method is one of constant-temperature amplification methods capable of amplification by use of only one temperature. In the present example, this temperature is 41 degrees.
  • the reaction container 2 accommodates the reaction liquid containing a specimen and a base labeled by the fluorescent substance.
  • the reaction containers 2 are sequentially loaded into the carousel in a predetermined cycle, and the fluorescence measurement is performed.
  • An operational cycle of the carousel consists of the container setting period and the fluorescence measurement period.
  • the container setting period the carousel is stopped, and the reaction container is placed or removed.
  • the fluorescence measurement period the fluorescence measurement is performed while rotating the carousel at a constant speed.
  • the fluorescence intensity is measured when the reaction container is passing a detection position on the detector.
  • the lengths of the container setting period and the length of the fluorescence measurement period are constant, and the setting and the measurement are repeated in a predetermined cycle.
  • the reaction container passes all of the detectors circumferentially placed. To each of the detectors, the fluorescence of the wavelength to be measured has been assigned. Each of the detectors independently detects the fluorescence having the wavelength assigned thereto. In each of the reaction containers 2, the identical specimen has been collected. Data measured by each of the detectors is accumulated as a chronological change of the reaction liquid in an external computer, and further, is externally output as a quantitative analytical result.
  • the detector 5 is added or exchanged. Accordingly, even if the test items are increased, or the types of the fluorophore are changed, it is not required to introduce a new nucleic acid analyzer.
  • fluorescence measurements of the wavelengths different from one another are assigned to the detectors respectively. That is, the detectors each detect the fluorescences of the wavelengths being different from one another respectively.
  • the identical wavelength may be assigned to the plurality of detectors.
  • the plurality of detectors measure the fluorescence having the identical wavelength.
  • a measurement range is optimized by giving a different gain to each detector.
  • the fluorescence having the identical wavelength is assigned to a first detector 5a and a second detector 5b.
  • a configuration is made such that the gain of signal amplification in the first detector 5a is different from that in the second detector 5b. That is, the amplification gains different from one another are given.
  • the gain of the first detector 5a is set to be low, whereas the gain of the second detector 5b is set to be high.
  • the fluorescence is detected by the first detector 5a.
  • the first detector 5a has a low gain and therefore a high detection limit. Accordingly, even if the specimen has a high concentration, the fluorescence can be detected.
  • the fluorescence is detected by the second detector 5b.
  • the second detector 5b has a high gain and therefore a low detection limit. Accordingly, even if the specimen has a low concentration, the fluorescence can be detected.
  • Two detectors detect the fluorescence having the identical wavelength. However, the two detectors have the different gains, and therefore, it is avoided that the fluorescence cannot be detected because the fluorescence is beyond the detection limit. That is, the measurement range can be optimized by changing the gain for each detector. This makes it possible to lower a risk of wasting the specimen.
  • an A/D convertor of the first detector 5a has the resolution of 8 bits
  • the A/D convertor of the second detector 5b has the resolution of 16 bits.
  • the 8 bits is a low resolution on the assumption that the specimen has the normal concentration.
  • the 16 bits is a high resolution on the assumption that the specimen has a low concentration. Since in this way, the fluorescence of the specimen having a normal concentration is assigned to the first detector 5a and the fluorescence of the specimen having a low concentration is assigned to the second detector 5b, it is possible to detect a minute difference in concentration.
  • a different bit resolution may be given to the A/D convertor for each detector.
  • the number of integration of the obtained data may be changed for each detector.
  • the identical wavelengths may be assigned, and the identical amplification gains may be given.
  • the identical detection result can be obtained from a plurality of detectors.
  • resistance to a failure or a device error increases.
  • the reaction containers placed in the carousel 3 the identical specimens have been collected. Accordingly, if the reaction container or the detector is changed, only the effect due to this change can be reflected on an analytical result, resulting in an improvement in reliability of measurement data.
  • the explanation has been made citing the nucleic acid analyzer as the example.
  • the present invention is by no means limited to the nucleic acid analyzer, and is applicable to devices for analyzing the specimens collected from biological bodies at large.
  • the explanation has been made as to the case where fluorescence detection is performed as the example of the reading unit.
  • the present invention is applicable also to the case where the target for analysis is detected by means of methods other than the fluorescence detection.
  • crosstalk In the case where a plurality of fluorophores are detected, mixture of the fluorescence between adjacent detectors is highlighted as a problem. This crosstalk causes the S/N ratio to be lowered in the nucleic acid analyzer which performs the fluorescence measurement. It is assumed that when the first detector 5a detects the fluorescence from the first reaction container 2a, the second detector 5b simultaneously detects the fluorescence from the second reaction container 2b.
  • the crosstalk detected by the first detector 5a will be considered. If the first detector 5a detects fluorescence 301 from the adjacent second reaction container 2b, it causes the crosstalk. If the first reaction container 2a is irradiated with the excitation light 302 from the adjacent second detector 5b, it generates the fluorescence. If this fluorescence is detected by the first detector 5a, it causes the crosstalk.
  • a douser 15 is provided between the first detector 5a and the second detector 5b.
  • the douser 15 prevents the fluorescence 301 from the adjacent second reaction container 2b from reaching the first detector 5a, and further, prevents the first reaction container 2a from being irradiated with the excitation light 302 from the adjacent second detector 5b.
  • each of the detectors 5a and 5b is provided with a shutter 16.
  • the shutter 16 is configured so as to block an excitation-light irradiation port or a fluorescence reading port of the detector.
  • the shutter 16 provides a function similar to the function of the douser 15.
  • the shutter 16 may be configured so as to be closed when the reaction container, the fluorescence of which is not to be measured, is located at the detection position, and be opened when the reaction container, the fluorescence of which is to be measured, is located at the detection position. Further, as shown in Figure 4B , a distance L between adjacent two detecting devices may be made sufficiently large. This makes it possible to obtain the function similar to that of the douser 15 or the shutter 16. That is, the fluorescence 301 from the adjacent second reaction container 2b is prevented from reaching the first detector 5a. Further, the first reaction container 2a is prevented from being irradiated with the excitation light 302 from the adjacent second detector 5b. It is to be noted that an interval between the adjacent reaction containers 2a and 2b may be made large. However, if the interval L between the reaction containers 2a and 2b is too large, the number of reaction containers to be placed in the carousel decreases. Accordingly, the interval L between the reaction containers 2a and 2b is in a predetermined range.
  • the optical system includes an excitation optical system and a detection optical system.
  • the excitation optical system includes a light source 21, condensers 22, and an excitation filter 23.
  • the detection optical system includes the condensers 22, a fluorescence filter 24, and a photodiode 25.
  • the bottom surface of the reaction container 2 is irradiated with the excitation light, and the fluorescence is detected from a reading port opened on a side of the reaction container 2.
  • the shutter 16 which is shown in Figure 4B is not illustrated, however, the shutter 16 may be provided.
  • the optical system includes the excitation optical system, the detection optical system, a dichroic mirror 26, and the shutter 16.
  • the excitation optical system includes the light source 21, the condensers 22, and the excitation filter 23.
  • the detection optical system includes the condensers 22, the fluorescence filter 24, and the photodiode 25.
  • FIG. 6 an explanation will be made as to another example of the means for preventing the crosstalk.
  • four detectors 5 a, 5b, 5c, and 5d are sequentially arranged in parallel along the circumference of the carousel 3. According to the present example, these detectors are selected such that a difference in wavelengths of the excitation light generated by the light sources of the two detectors adjacent with each other is larger than a predetermined difference in wavelengths. Further, these detectors are selected such that a difference in wavelengths of the fluorescence detected by the detection elements of the two detectors adjacent with each other is larger than a predetermined difference in wavelengths.
  • detected is the fluorescence from four fluorophores of FAM, ROX, Cy5, and Alexa405.
  • Figure 7 shows the wavelength of the excitation light and the wavelength of the fluorescence of the respective four fluorophores of FAM, ROX, Cy5, and Alexa405.
  • Two peaks 701 near the wavelength 400 nm represent an absorption wavelength and a radiation wavelength of the fluorophore Alexa405.
  • Two peaks 702 near the wavelength of 500 nm represent the absorption wavelength and the radiation wavelength of the fluorophore FAM.
  • Two peaks 703 near the wavelength of 600 nm represent the absorption wavelength and the radiation wavelength of the fluorophore ROX.
  • Two peaks 704 near the wavelength of 650 to 700 nm represent the absorption wavelength and the radiation wavelength of the fluorophore Cy5.
  • the detectors of the two fluorophores are arranged so as not to be adjacent with each other.
  • the fluorophore ROX may be assigned to the first detector 5a; the fluorophore Alexa405 to the second detector 5b; the fluorophore Cy5 to the third detector 5c; and the fluorophore FAM to the forth detector 5d.
  • the assignments other than the above-mentioned assignments may be made, if the detectors with respect to the two fluorophores of FAM and ROX are not adjacent, and the detectors with respect to the two fluorophores of ROX and Cy5 are not adjacent.
  • detectors 5a, 5b, 5c, 5d, 5e, 5f, 5g, and 5h are sequentially arranged in parallel along the circumference of the carousel 3.
  • the detectors 5a, 5b, 5c, and 5d of a first group have the configurations identical to those of the detectors 5e, 5f, 5g, and 5h of a second group. That is, each of pairs of the detectors arranged at both ends of a diameter of the carousel 3 has the identical configuration.
  • the first detector 5a and the fifth detector 5e have the identical configuration, which generates the excitation light having the identical wavelength and detects the fluorescence having the identical wavelength.
  • the second detector 5b and the sixth detector 5f have the identical configuration, which generates the excitation light having the identical wavelength and detects the fluorescence having the identical wavelength.
  • the third detector 5c and the seventh detector 5g have the identical configuration, which generates the excitation light having the identical wavelength and detects the fluorescence having the identical wavelength.
  • the forth detector 5d and the eighth detector 5h have the identical configuration, which generates the excitation light having the identical wavelength and detects the fluorescence having the identical wavelength.
  • the identical measurement results should be obtained by the first detector 5a and the fifth detector 5e. If the identical measurement results are not obtained, it is determined that the detectors are under abnormal conditions, or it is determined that processing such as data processing or display processing is under abnormal conditions. If the cause of the abnormal conditions is found out and it is found that one of the pair of detectors is out of order, it is possible to determine that the other of detectors is under normal conditions. In this case, the measurement data from the detector which is determined to be under normal conditions is adopted, and therefore it is possible to eliminate a need for performing the measurement again. Thus, it is possible to output the analytical results without wasting the valuable specimen.
  • the data at two points with respect to the identical sample can be obtained.
  • the analytical results having high precision can be obtained.

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EP09834720.6A 2008-12-25 2009-12-10 Analysator Active EP2381243B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008331057A JP5279481B2 (ja) 2008-12-25 2008-12-25 核酸分析装置
PCT/JP2009/070661 WO2010073917A1 (ja) 2008-12-25 2009-12-10 分析装置

Publications (3)

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EP2381243A1 true EP2381243A1 (de) 2011-10-26
EP2381243A4 EP2381243A4 (de) 2017-10-11
EP2381243B1 EP2381243B1 (de) 2020-11-11

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CN102265141A (zh) 2011-11-30
US8895296B2 (en) 2014-11-25
JP5279481B2 (ja) 2013-09-04
WO2010073917A1 (ja) 2010-07-01
EP2381243A4 (de) 2017-10-11
US20150024401A1 (en) 2015-01-22
US20110256532A1 (en) 2011-10-20
EP2381243B1 (de) 2020-11-11
JP2010151665A (ja) 2010-07-08
US9523114B2 (en) 2016-12-20

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